Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong duc cua snippets" » "dang duc cua snippets", "ton duc cua snippets", "hong doc cua snippets", "hong luc cua snippets", "hong tuc cua snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hong duc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong duc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong duc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong duc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.